Sock



FIG. 1 is a perspective view of a sock showing my new design in an in-use configuration;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines immediately adjacent to the shaded area represent unclaimed boundaries of the design. The contrast in shading represents a contrast in appearance only and does not represent any particular color, material, texture or finish. The broken lines showing the remainder of the sock are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a sock, as shown and described. 